This data set contains imagery from the National
Agriculture Imagery Program (NAIP). The NAIP
acquires digital ortho imagery during the
agricultural growing seasons in the continental U.S.
A primary goal of the NAIP program is to enable
availability of ortho imagery within one year of
acquisition. The NAIP provides two main products: 1
meter ground sample distance (GSD) ortho imagery
rectified to a horizontal accuracy within +/- 5 meters
of reference digital ortho quarter quads (DOQQ's) from
the National Digital Ortho Program (NDOP) or from the
National Agriculture Imagery Program (NAIP); 1 meter
GSD ortho imagery rectified within +/- 6 meters to
true ground. The imagery may contain as much as
10% cloud cover per tile.

The tiling format of the USDA_FSA NAIP imagery is
based on a 3.75' x 3.75' quarter quadrangle with a 300
meter buffer on all four sides. These quarter quads are
mosaicked into seamless countywide products, rectified
to the UTM coordinate system (NAD83) and compressed to
MrSID (with a compression ratio of 15:1). The county
mosaics comprise the source imagery for the product
GRANIT is distributing.

GRANIT re-processed the countywide mosaics to:
1) re-project the data to NH State Plane feet, NAD83;
2) mosaic the county files into a statewide image;
3) tile the data to 15-minute quadrangles to facilitate
distribution; and
4) re-compress the data to MrSID Generation 3 format using
a 50:1 compression ratio.

Purpose:

The NAIP imagery is available for distribution within
60 days of the end of a flying season and is intended
to provide current information of agricultural conditions
in support of USDA farm programs. For USDA Farm Service
Agency, the 1 meter GSD product provides an ortho image
base for Common Land Unit boundaries and other data sets.
The NAIP imagery is generally acquired in projects
covering full states in cooperation with state
government and other federal agencies who use the
imagery for a variety of purposes including land use
planning and natural resource assessment. The NAIP is
also used for disaster response, often providing the most
current pre-event imagery.

For additional information on the processing steps used to generate
the original MrSID countywide mosaics, please contact the APFO
(sales@apfo.usda.gov, or 801-975-3503) or visit their website at
www.apfo.usda.gov.

For those requiring specific image acquisition information, a companion
shapefile (GRANIT NAIP2009 Index)is available. Contact GRANIT (granit@unh.edu)
to request this file, which details each image footprint along with the
corresponding acquisition date.

The original, countywide MrSID mosaics are also available upon request
from GRANIT (granit@unh.edu).

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20090711

Ending_Date: 20090728

Currentness_Reference: Photography Source Image Dates.

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Irregular

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -71.000

East_Bounding_Coordinate: -70.750

North_Bounding_Coordinate: 43.250

South_Bounding_Coordinate: 43.000

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: NAIP2009

Theme_Keyword: Digital Georectified Image

Theme_Keyword: Georeferenced Image

Theme_Keyword: Orthoimagery

Theme_Keyword: Orthophotography

Theme_Keyword: NAIP

Theme_Keyword: Aerial Photography

Theme_Keyword: Agriculture

Theme_Keyword: Farming

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: United States

Place_Keyword: Northeast

Place_Keyword: New England

Place_Keyword: New Hampshire

Place_Keyword: DOVER

Access_Constraints: None

Use_Constraints:

The USDA-FSA Aerial Photography Field Office asks to
be credited in derived products.

If defects are found in the NAIP imagery during the warranty
period such as horizontal offsets, replacement imagery may be
provided. Imagery containing defects that require the
acquisition of new imagery, such as excessive cloud cover,
specular reflectance, etc., will not be replaced within a
NAIP project year.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Complex Systems Research Center

Contact_Person: GRANIT Database Manager

Contact_Position: GRANIT Database Manager

Contact_Address:

Address_Type: mailing and physical address

Address: Morse Hall, University of New Hampshire

City: Durham

State_or_Province: NH

Postal_Code: 03824

Country: US

Contact_Voice_Telephone: 603-862-1792

Contact_Facsimile_Telephone: 603-862-0188

Contact_Electronic_Mail_Address: granit@unh.edu

Hours_of_Service: 8:30AM-5PM, EST

Data_Set_Credit: GRANIT database

Native_Data_Set_Environment: MrSID compressed image

Data_Quality_Information:

Logical_Consistency_Report:

NAIP tile file names are based on the GRANIT 15-minute quad tile index.

The source data for this citation comprises the 10 county mosaics for
New Hampshire: ortho_1-1_1n_s_nh001_2009_1.sid, ortho_1-1_1n_s_nh003_2009_1.sid,
ortho_1-1_1n_s_nh005_2009_1.sid, ortho_1-1_1n_s_nh007_2009_1.sid,
ortho_1-1_1n_s_nh009_2009_1.sid, ortho_1-1_1n_s_nh011_2009_1.sid,
ortho_1-1_1n_s_nh013_2009_1.sid, ortho_1-1_1n_s_nh015_2009_1.sid,
ortho_1-1_1n_s_nh017_2009_1.sid, and ortho_1-1_1n_s_nh019_2009_1.sid

QUADS15 provided the bounding rectangles to use in
subsetting the data.

Process_Step:

Process_Description:

The first processing step, described below, represents processing performed
by USDA FSA APFO to create the COUNTYMOSAICS.

For each county, aerial photography was acquired using a frame based digital camera
(UltraCamD (UCD), UltraCamX (UCX), or DMC), therefore no scanning conversion
from film to digital was needed. Geometric and radiometric
calibration for each one of the camera heads is determined in the
manufacturing laboratory. This step is also known as geometric and
radiometric calibration of a single camera head and done when the
sensor is being manufactured. The 4 multispectral heads collect
4 separated bands: Red, Green, Blue and Near Infrared wavelength.
Both the UltraCam and DMC sensors collect 12bit data. The UCD sensor
CCD pixel size is 9 micron with a footprint of 7500 pixels in the
long track, and 11500 pixels in the cross track.
The UCX sensor CCD pixel size is 7.2 micron with a footprint of
9420 pixels in the long track, and 14430 pixels in the cross track.
The DMC sensor CCD pixel size is 12 micron with a footprint of
7680 pixels in the long track, and 13824 pixels in the cross track.
Twin Engine Navajo, Turbo Commander and Conquest aircrafts
were used, flying at average flight height of 6,700 to 8,600 meters above
ground, allowing image acquisition of 0.67 to 0.86 meters Ground Sample
Distance. An INS - Inertial Navigation System, with
AGPS (Airborne GPS) and IMU (Inertial Measurement Unit) was utilized for
all aerial missions. The INS allows for accurate photo-center
registration and image orientation. For inspection and verification of
accuracy of the exterior orientation computed with the Inertial Navigation
System, stereo compilation was performed for every flight mission and its
result compared against higher accuracy source data. If a test of
positional accuracy failed (> 5 meters) a full analytical triangulation
is processed for that mission, assuring accurate horizontal positioning.
USGS seamless NED data was used as a surface for ortho-rectification.
Surdex used proprietary software to rectify the scanned images.
Rectification was done using Lagrange resampling. Color balancing
was then performed on each exposure. Surdex software tonally balanced
each exposure to alleviate the effects of hotspots, side-to-side shading
within an exposure, and tonal differences between flightlines due to
dissimilar conditions at the time of capture. Each exposure was then
balanced to predefined target values used throughout the project,
creating a dataset consistent and uniform in radiometry. Seams between
exposures were determined by Surdex software to use the best exposure
based on proximity to nadir and ground angle to the camera. Delivery
tiles were then extracted from Surdex seamless imagery database, named
to meet the DOQQ and/or DOQ naming convention, and formatted as defined
in the task order. Horizontal accuracy was once again tested for 6-meter
absolute accuracy. If failed, then the entire flight mission would be
revised, a new aerotriangulation performed and new set of doqqs produced.
Quality control was performed on a sampling of each deliverable to ensure
no artifacts or anomalies were present in the imagery.

Process_Date: 2009

Process_Step:

Process_Description:

ERDAS Imagine 9.3 was used to project each of the COUNTYMOSAICS from UTM
to New Hampshire State Plane feet, NAD83, using the rigorous transformation
option.

Source_Used_Citation_Abbreviation: COUNTYMOSAICS

Process_Date: 200912

Source_Produced_Citation_Abbreviation: COUNTYMOSAICSP

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Organization: Complex Systems Research Center

Contact_Person: GRANIT Database Manager

Contact_Position: GRANIT Database Manager

Contact_Address:

Address_Type: mailing and physical address

Address: Morse Hall, University of New Hampshire

City: Durham

State_or_Province: NH

Postal_Code: 03824

Country: US

Contact_Voice_Telephone: 603-862-1792

Contact_Facsimile_Telephone: 603-862-0188

Contact_Electronic_Mail_Address: granit@unh.edu

Hours_of_Service: 8:30AM-5PM, EST

Process_Step:

Process_Description:

ERDAS Imagine 9.3 was used to mosaic each of the 10 projected county
images (COUNTYMOSAICP) to produce a master statewide image. This was done
to enable tiling the data into full 15-minute quadrangles within the
state. The following lists the order in which the tiles were mosaicked:
Hillsborough (013), Sullivan (019), Strafford (017), Rockingham (015),
Merrimack (013), Grafton (009), Coos (007), Cheshire (005), Carroll (003),
and Belknap (001). Counties at the end of the list overwrite preceding
entries. (Note that the order is reverse numeric with the exception
of Hillsborough. The source Hillsborough county mosaic had quality issues and
we attempted to overwrite these problem areas as much as possible with
data from adjacent counties.)

Source_Used_Citation_Abbreviation: COUNTYMOSAICSP

Process_Date: 200912

Source_Produced_Citation_Abbreviation: STATEMOSAIC

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Organization: Complex Systems Research Center

Contact_Person: GRANIT Database Manager

Contact_Position: GRANIT Database Manager

Contact_Address:

Address_Type: mailing and physical address

Address: Morse Hall, University of New Hampshire

City: Durham

State_or_Province: NH

Postal_Code: 03824

Country: US

Contact_Voice_Telephone: 603-862-1792

Contact_Facsimile_Telephone: 603-862-0188

Contact_Electronic_Mail_Address: granit@unh.edu

Hours_of_Service: 8:30AM-5PM, EST

Process_Step:

Process_Description:

ArcGIS 9.3.1 was used to buffer each quad in QUADS15 by 3000 ft.
This was done to enlarge the clipping extent in preparation for
subsequent processing.

Source_Used_Citation_Abbreviation: QUADS15

Process_Date: 200912

Source_Produced_Citation_Abbreviation: QUADS15B

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Organization: Complex Systems Research Center

Contact_Person: GRANIT Database Manager

Contact_Position: GRANIT Database Manager

Contact_Address:

Address_Type: mailing and physical address

Address: Morse Hall, University of New Hampshire

City: Durham

State_or_Province: NH

Postal_Code: 03824

Country: US

Contact_Voice_Telephone: 603-862-1792

Contact_Facsimile_Telephone: 603-862-0188

Contact_Electronic_Mail_Address: granit@unh.edu

Hours_of_Service: 8:30AM-5PM, EST

Process_Step:

Process_Description:

ERDAS Imagine 9.3 was used to subset the statewide mosaic into
65 15-minute quadrangle .img files based on the QUADS15B data. Specifically,
each individual quad was selected, copied to an aoi and the resulting
aoi was then used to constrain the subset process to the quad boundary.

Source_Used_Citation_Abbreviation: STATEMOSAIC, QUADS15B

Process_Date: 200912

Source_Produced_Citation_Abbreviation: NAIPQUADS

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Organization: Complex Systems Research Center

Contact_Person: GRANIT Database Manager

Contact_Position: GRANIT Database Manager

Contact_Address:

Address_Type: mailing and physical address

Address: Morse Hall, University of New Hampshire

City: Durham

State_or_Province: NH

Postal_Code: 03824

Country: US

Contact_Voice_Telephone: 603-862-1792

Contact_Facsimile_Telephone: 603-862-0188

Contact_Electronic_Mail_Address: granit@unh.edu

Hours_of_Service: 8:30AM-5PM, EST

Process_Step:

Process_Description:

The NAIPQUADS images were compressed using LizardTech GeoExpress 4.0 to generate
the final *.sid files for distribution. The files were compressed with a 50:1 encoding
ratio to produce a set of MrSID Generation 3 output files. A ratio of 50 was used to
correspond with previous GRANIT NAIP distributions and to facilitate ease of data
download via the internet. Additionally, each quad was "cropped" by 2500 feet during
the compression process to ensure perfectly orthogonal images.

Digital data in NH GRANIT represent the efforts of the
contributing agencies to record information from the cited
source materials. Complex Systems Research Center, under
contract to the NH Office of Energy and Planning, and in
consultation with cooperating agencies, maintains a
continuing program to identify and correct errors in these
data. OEP, CSRC, and the cooperating agencies make no claim
as to the validity or reliability or to any implied uses of
these data.